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Finding the Fourth Proportional to 92,622.60, 127,836.90 and 54,390.60

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Solution

The fourth proportional to 92,622.60, 127,836.90 and 54,390.60 is: 75,069.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,622.60 : 127,836.90 = 54,390.60 : x
  2. Step 2: Convert to fraction form
    92,622.60/127,836.90 = 54,390.60/x
  3. Step 3: Cross multiply
    92,622.60x = 127,836.90 × 54,390.60
  4. Step 4: Simplify right side
    92,622.60x = 6,953,125,693.14
  5. Step 5: Solve for x
    x = 6,953,125,693.14/92,622.60
  6. Step 6: Final answer
    x = 75,069.43

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.